Which group (family) of non-metals does not form ions?

Answer:less than

Explanation:

If we had 79.3 grams of Xe, we would expect a volume that is less than obtained with neon. So, the correct option is (C).

Density is defined as the mass per unit volume of a substance. The most commonly used symbol for density is ρ, although the Latin letter d can also be used. Density is defined as mass divided by volume:

[tex]{\displaystyle \rho ={\frac {m}{V}}}[/tex]

where ρ is density,

m is mass, and

V is volume.

The mass contained per unit volume of an object is known as density. where the SI unit of density is kilogram per cubic meter [tex](kg/m^3).[/tex] Density is inversely proportional to volume, so the density of Xenon is [tex]5.894 kg/m^3[/tex] while the density of neon is 0.89994 kg/m³. So, if density is more than volume will be less and vice versa. In this case, density of Xenon is more as compare to neon so, the volume of neon will be more.

Thus, if we had 79.3 grams of Xe, we would expect a volume that is less than obtained with neon. So, the correct option is (C).

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Answer:

Kc = 0.333

Explanation:

First of all we state the equilibrium reaction:

C₂H₅OH(aq) + CH₃CO₂H(aq)  ⇄  CH₃CO₂C₂H₅(aq) + H₂O(l)

Initially we start with 1 mol of alcohol and 1 mol of acid. After the reaction goes complete, 0.25 moles of acid have been consumed. As ratio is 1:1, we also consumed 0.25 moles of alcohol. Then, in the product side we finally produced 0.25 moles of water and 0.25 moles of ethyl acetate.

How many moles are available in the reactant side, after the equilibrium?

1 mol - 0.25 moles (that have been reacted) = 0.75 moles.

To determine Kc, we need molar concentrations, so let's see M in products and reactants:

0.75 mol / 0.25 L = 3 M

0.25 mol / 0.25 L = 1 M

We needed to convert 0.250 mL to L → 0.250 mL . 1L/ 1000mL = 0.250 L

Let's determine expression for Kc:

Kc = [H₂O] . [CH₃CO₂C₂H₅]  / [C₂H₅OH] . [CH₃CO₂H]

1 . 1 / 3 . 3 = 1/9 → 0.333

Explanation:

An island is formed when magma builds up and breaks the ocean's surface. In some cases, like the island of Hawaii, land masses merge together. ... For many volcanoes, formation can take thousands of years, though some volcanic islands can sometimes appear quite suddenly

Answer:

As volcanoes erupt, they build up layers of lava that may eventually break the water's surface. When the tops of the volcanoes appear above the water, an island is formed.

Explanation:

Answer:

0.664 g are formed by the reaction.

Explanation:

First of all, we determine the reaction:

Mg + CO₂  →  MgO  + CO

We need to determine the moles of the CO₂ by the Ideal Gases Law.

We convert to L, the volume → 400 mL = 0.4L

T° → 23°C + 273 = 296K

P . V = n . R .T

n = P . V / R .T

n = (1 atm . 0.4L) / (0.082 . 296K) → 0.0165 moles

Moles of Mg → 2.5 g . 1mol / 24.3g = 0.103 moles

As ratio is 1:1, CO₂ is the limiting reactant.

For 1 mol of Mg, we need 1 mol of gas

Then, for 0.103 moles of Mg, we need 0.103 moles of gas, but we only have 0.0165 moles.

If we see the product side, ratio is also 1:1

0.0165 moles of CO₂ must produce 0.0165 moles of MgO.

We convert the moles to mass → 0.0165 mol . 40.3 g /1mol = 0.664 g

sublimation is the transition of a substance directly from the solid to the state without passing through the liquid state

Answer:

It's C

Explanation:

cuz im goated

Answer:

mass

Explanation:

Answer:

The answer is C.

Explanation:

If you have absolutely identical objects that have the same weight exactly when they are at the same temperature, then when one object is heated, it will weigh more.

Hope this helps :)

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Aerospace

Thermoset composites are being specified for wings, fuselages, bulkheads, and other applications in commercial, civilian and military aerospace applications.

Appliance/Business

Thermoset composite are being used in frames, equipment panels, handles and trims in appliances, power tools, business equipment and many other applications.

Thermoset composites for the appliance industry are used in washers, dryers, refrigerators, freezers, ranges, ovens, dishwashers for components that include control panels, handles, knobs, vent trims, side trims, motor housings, kick plates and many others.

Automotive/Transportation/Farm/Construction

Composites are now being used in vehicle and equipment applications, including, panels, frames, interior components and other parts.

Civil Infrastructure

Some composite infrastructure applications include buildings, roads, bridges and pilings.

Construction

Thermoset composites are replacing many traditional materials for home and offices architectural components including fixtures, doors, wall panels, roofing, window frames, moulding, vanity sinks, shower stalls and even swimming pools.

Corrosive Environments

Composites are ideal for applications in corrosive environments, such as chemical processing plants, pulp and paper converting, oil and gas refineries and water treatment facilities.  Common applications include fans, grating, tanks, ducts, hoods, pumps and cabinets.

Electrical

With strong dielectric properties including arc and track resistance, Thermoset components include substation equipment, microwave antennas, standoffs and pole line hardware and printed wiring boards. Applications and components include switchgear,  motor controls,  standoff insulators, control system components,  circuit breakers,  arc chutes, arc shields, terminal blocks,  terminal boards,  metering devices,  bus supports and lighting components.

Marine

With their corrosion resistance and light-weighting attributes, Marine composite applications include boat hulls, bulkheads and other components for military, commercial and recreational boats and ships.

Answer:

D

Explanation:

Reacting with acid is the only chemical property out of the 4 options. The rest are physical

The question is incomplete, the complete question is;

Choose the aqueous solution that has the highest boiling point. These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable. 0.100 m C6H12O6 0.100 m AlCl3 0.100 m NaCl 0.100 m MgCl2 They all have the same boiling point.

Answer:

AlCl3 0.100 m

Explanation:

Let us remember that the boiling point elevation is given by;

ΔTb = Kb m i

Where;

ΔTb = boiling point elevation

Kb = boiling point constant

m = molality of the solution

i = Van't Hoff factor

We can see from the question that all the solutions possess the same molality, ΔTb now depends on the value of the Van't Hoff factor which in turn depends on the number of particles in solution.

AlCl3 yields four particles in solution, hence ΔTb is highest for AlCl3 . The solution having the highest value of ΔTb also has the highest boiling point.

Answer:

Wind is an emissions-free source of energy

Overall, using wind to produce energy has fewer effects on the environment than many other energy sources. Wind turbines do not release emissions that can pollute the air or water (with rare exceptions), and they do not require water for cooling.

Explanation:

Answer:

Sorry

Explanation:

I m very sorry I don't know this

Answer:

1,43 M

Explanation:

molair mass NaCl = 58,44 g/mol

You need to calculate how many moles 25 g is:

25 g / 58,44 g/mol = 0,4278 mol

0,4278 mol / 0,3 L = 1,43 M

Answer:

Karenia brevis produces toxins called brevetoxins that affect a variety of marine wildlife. Aquatic organisms can be exposed to brevetoxins in several ways: coming into contact with K. brevis cells or toxins in the water, ingesting cells, inhaling toxins and consuming toxic prey.

Explanation:

Answer:

5.3g of MgO would be produced

Explanation:

Based on the chemical reaction:

2Mg(s) + O₂(g) → 2MgO(s)

1 mole of Mg reacts per mole of oxygen.

To solve this question we need to convert the mass of each reactant to moles in order to find limiting reactant using the chemical equation:

Moles Mg -Molar mass: 24.305g/mol-:

3.8g Mg * (1mol / 24.305g) = 0.1563moles Mg

Moles O₂ -Molar mass: 32g/mol-:

2.1g O₂ * (1mol / 32g) = 0.0656 moles O₂

For a complete reaction of 0.0656 moles of O₂ are required:

0.0656 moles O₂ * (2 mol Mg / 1mol O₂) = 0.132 moles Mg

As there are 0.1563 moles of Mg, Mg is the excess reactant and O₂ the limiting reactant.

0.0656 moles O₂ produce:

0.0656 moles O₂ * (2 mol MgO / 1mol O₂) = 0.132 moles MgO

The mass is -Molar mass MgO: 40.3g/mol-:

0.132 moles MgO * (40.3g / mol) =

5.3g of MgO would be produced

Answer:

the process shown here is endocytosis.

Explanation:

endocytosis is a process of taking something inside the cell..

Answer:

Reproduction

Explanation:

Reproduction is the biological process by which new “offspring” (like organisms) are produced from their “parents" (the original organism)

Answer:

i did this so the next person can have brainliest

Explanation:

Answer:

The name of that molecule should be 1-pentyne

so your answr should be B

Explanation:

Molecules are species made up of atoms. The given molecule in the figure is 1-pentyne. Thus, option B is correct.

1-Pentyne is a chemical compound with the formula C₅H₈, and an internal alkyne group between the first and the second carbon atom.

The molecules consist of twelve bonds including the bonds between the carbon-carbon, and carbon-hydrogen. There is one triple or the alkyne bond present and five carbon hence the name of the molecule is 1-Pentyne.

Therefore, the molecule is option b. 1-Pentyne.

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Answer:

reff lagay mo yung ilalagay mo

Answer:

Freezing point is the temperature at which a liquid becomes a solid at normal atmospheric pressure. Alternatively, a melting point is the temperature at which a solid becomes a liquid at normal atmospheric pressure.

Answer:

3SiO2  +  2CaC2 ------>   3Si  +   2CaO  +  2CO2

Explanation:

Answer:

Explanation:

Here's the complete question:

A chemist analyzes two samples.One sample contains 14g of element x and 6.0g of element y.The second sample contains 28g of element x and 6.0g of element y. Does it appear that the two samples are the same substance?

The two samples that we are given in the question are different. They are not the same thing because we can deduce that their components ratio are different.

Sample One contains 14g of element x and 6.0g of element y. The ratio of element x to y is 14/6 = 7/3 = 7:3.

Sample Two contains 28g of element x and 6.0g of element y. The ratio of element x to y is 28/6 = 14/3 = 14:3.

Therefore, they have different ratio for their components and are therefore not thesame.

Answer:

84 g of N₂        

Explanation:

We begin from the reaction:

N₂O₄  +  2N₂H₄ →  3N₂  + 4H₂O

  1st step: Find out the limiting reactant.

We convert the mass to moles.

       276 g . 1mol/ 92g = 3 moles of N₂O₄

64 g . 1mol / 32g = 2 moles of hidrazine  

Limiting reactant is the hydrazine. Ratio is 1:2, then for 3 moles of tetroixde I may need 6 moles of N₂H₄. (But I only have 2).

To determine the grams of produced nitrogen we see stoichiometry (2:3)    

2 moles of hydrazine can produce 3 moles of N₂

Definetaly our 2 moles make 3 moles of gas.

We convert the moles to mass.

3 mol . 28g /1mol = 84 g of N₂                                                                                                

Answer:

the breaking down of rock is known as weathering

Answer:

Explanation:

It involves the thinking of it as an electrical interaction between the positively charged part of an atom and the negatively charged part as well. Succinctly put, the interaction between the proton of an atom and the electron of an atom.

The relationship between these two sub atomic particles is one of the basis for many chemical bonding, and this is inclusive of all the bonds there exist. Hydrogen, Electrovalent and even Covalent bondings to mention but a few

Answer: A

Explanation:

Answer:

Explanation:

i may be wrong but i think its b

Answer:

B Ndaira is right for real

Answer:

This means that the pressure would become double of it's initial pressure.

Explanation:

Key statements:

- Constant temperature

- What happens to the pressure of the gas if the volume was

smooshed down to half its original size?

Basically the question is asking about the relationship between pressure and volume at constant temperature. This is given by Boyle's law.

Boyle's law states that the volume of a fixed mass of gas is inversely proportional to it's volume at a fixed temperature.

This is given by;

P1V1 = P2V2

Where;

P1 = Initial pressure

P2 = Final pressure

V1 = Initial Volume

V2 = Final Volume

From the question;

V2 = V1/2

Inserting it into the equation;

P1 V1 = P2 V1/2

Divide all through by  V1

P1  = P2 /2

P2 = 2 P1

This means that the pressure would become double of it's initial pressure.